Gasa were a form of poetry popular during the Joseon Dynasty in Korea. They were commonly sung, and were popular among yangban women. Jeong Cheol, a poet of the 16th century, is regarded as having perfected the form, which consisted of parallel lines, each broken into two four-syllable units. The form had first emerged during the Goryeo period. Hangul also refers to a word processing application widely used in Korea. ... It has been suggested that Sino-Korean be merged into this article or section. ... The Revised Romanization of Korean (Korean: êµì´ì ë¡ë§ì í기ë²; åèªì ë¡ë§å è¡¨è¨æ³) is the official Korean language romanization system in South Korea. ... McCune-Reischauer romanization is one of the two most widely used Korean language romanization systems, along with the Revised Romanization of Korean, which replaced (a modified) McCune-Reischauer as the official romanization system in South Korea in 2000. ... The Joseon Dynasty was the final ruling dynasty of Korea, then called Joseon, lasting from 1392 until 1910. ... Korea (íêµ, Hanguk, or ì¡°ì , ChosÇn) is a civilization and geographical area situated on the Korean Peninsula in East Asia, bordering China to the northwest and Russia to the northeast, with Japan situated to the southeast across the Korea Strait. ... The Yangban were a well educated scholarly class of male Confucian scholars who were part of the ruling elite within Korea prior to 1945 and the republics period of Korean history. ... Chong Ch’ol (1536-1593) was a Korean administrator and poet. ... The state of Goryeo ruled Korea from the fall of Silla in 935 until the founding of Joseon in 1392. ...